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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Pcm (VIN C & VIN D) (4 Of 5) >> DTC P2251-00: A/F Sensor System: Open Circuit In A/F Sensor Signal Circuit >> Repeatability Verification Procedure

Repeatability Verification Procedure

  1. Warm up the engine to allow the engine coolant temperature to reach 80°C {176°F} or more.
  2. Start the engine and leave it idling for 1 min.
    NOTE:
    • Match the engine coolant temperature in the recorded freeze frame data/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
  3. Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the freeze frame data/snapshot data.
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